ACROSS
7. Legislate
13. Parliamentary government
14. Autocracy
15. Autocracy
16. Mixed economy
17. Federal government
DOWN
1. The free enterprise system
2. Unitary government
3. Separation of powers
4. Public policy
5. Legislative
6. Democracy
8. Oligarchy
9. Government
10. Constitution
11. Dictatorship
12. Judicial
I hope that helps! :)